Verrucaria funckii

Verrucaria funckii is a species of saxicolous (rock-dwelling), semi-aquatic, crustose lichen in the family Verrucariaceae. It occurs on inundated or submerged rocks (typically siliceous rocks) and pebbles in streams and lakeshores. It is widespread in Europe, including Northern Europe and Iceland, central Europe including the Carpathians and the Alps, and southern Europe. It is also found in Asia and North America.

The lichen was first formally described in 1826 by Kurt Polycarp Joachim Sprengel, as a species of Pyrenula. The species epithet honours German botanist Heinrich Christian Funck, who published the taxon in his series Kryptogamische Gewächse des Fichtelgebirges ("Cryptogamous plants of the Fichtel Mountains"). Alexander Zahlbruckner transferred the taxon to the genus Verrucaria in 1922.

Verrucaria funckii is an example of a ; that is, a lichen in which the partner is yellow-green algae (class Xanthophyceae), in this case, Heterococcus caespitosus.